How did you uninstall Backup & Restore? Are you sure it wasn't an extra program that came with your computer, like NTI or Norton or something like that? If so, check your CDs that came with your computer for one called "Applications" or "Software", but it in, and you should be able to re-install the program.

Google should be able to help you with your Apple question.

Also, backups (usually) have nothing to do with hardware. I'll see if a mod will move this to Windows Help.

Mac's have a feature called Time Capsule built into them which allows you to backup to a network drive or external drive. Windows 7 uses a built-in imaging software called Backup and Restore. If you removed it, you may be able to re-install it by going to start>control panel>programs and features>turn windows features on/off.